建立了合理的数据结构及适当的类等级，从而完成了整个软件系统的面向对象分析和设计模型。
And then, data structure and classes grade were built up, the objects and the model of the software system were completed.
高等级公路排水系统对于保障公路结构物的使用寿命和行车的通畅、安全具有十分重要的作用。
Drainage system of high-grade highway plays an important role in ensuring the lifetime of structure, avoiding traffic jam and securing vehicles.
文中主要介绍了飞机损伤评估系统的总体结构、基于规则损伤等级分析和基于案例的抢修方案制定的实现方法。
The realization methods of the damage classification by rule-based reasoning and the repair scheme establishment by instance-based reasoning are discussed in this paper.
本文主要介绍了在实际工业系统中常见的PLC网络结构及其通讯方式。针对工业系统中plc网络的规模、等级，给出使用的方法。
In this paper, the structures and communication means of PLC Net in the automation industry system are summarized and their usage methods are narrated according to their size and grading.
本文主要介绍了在实际工业系统中常见的PLC网络结构及其通讯方式。针对工业系统中plc网络的规模、等级，给出使用的方法。
In this paper, the structures and communication means of PLC Net in the automation industry system are summarized and their usage methods are narrated according to their size and grading.
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